Bug: String.prototype.endsWith

[Axel Rauschmayer]

http://wiki.ecmascript.org/doku.php?id=harmony:string_extras
I’ve found a small bug:

String.prototype.endsWith = function(s) {
    var t = String(s);
    return this.lastIndexOf(t) === this.length - t.length;
};
Interaction:
> "".endsWith("/")
true
> "#".endsWith("//")
true
> "##".endsWith("///")
true

Fix (e.g.):
String.prototype.endsWith = function(s) {
    var t = String(s);
    var index = this.lastIndexOf(t)
    return index >= 0 && index === this.length - t.length;
};


-- 
Dr. Axel Rauschmayer

axel at rauschma.de
twitter.com/rauschma

home: rauschma.de
blog: 2ality.com



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